- Photolysis of Enol Acetates and α-Bromo Derivatives of o-(Acyloxy)acetophenones
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UV irradiation of enol acetates 3a-g in benzene gives mainly o-(acetoxy)acetophenones 2 and 2-methylchromones 4. Under the same conditions, the dimethyl derivatives 3h and 3i remain unaffected.The α-bromo ketone 5a gives rise to mixtures of o-(acetoxy)acetophenone (2a), the diketone 6, and/or α-acetoxy-o-hydroxyacetophenone (7), depending on the irradiation conditions.The similarities and differences between the two series of experiments, as well as their possible mechanistic implications, are discussed.
- Garcia, Hermenegildo,Martinez-Utrilla, Roberto,Miranda, Miguel A.
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p. 589 - 598
(2007/10/02)
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- PHOTOCYCLIZATION OF ENOL ACETATES OF o-ACETOXYACETOPHENONES TO CHROMONES
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Enol acetates of o-acetoxyacetophenones give chromones upon irradiation with uv-light.
- Garcia, Hermenegildo,Martinez-Utrilla, Roberto,Miranda, Miguel Angel
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p. 1749 - 1750
(2007/10/02)
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